Cinder-sifter.



. R. DURRANT & G. E. BALB.

' CIN-DER SIFTBR.

APPLICATION FILED OUT. 28, 1907. 910,048. Patented Jan. 19, 1909,

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UNITED STATES PATENT OFFICE.

OLIVER ROSCO DURRANT AND CHARLES EDWARD BALE, OF OSIIAWA, ONTARIO,CANADA.

CINDER-SIFTER.

Specification of Letters Patent.

Patented Jan. 19, 1909.

Application filed. October 28, 1907. Serial No. 399,601.

T o all whom fit may concern:

Be it known that we, OLIVER Rosco DUR- RANT and CHARLES EDWARD BALB,both of the town of Oshawa, in the county of Ontario, in the Province ofOntario, Canada, have invented certain new and useful Improvements inOinder-Sifters, of which the following is the specification.

Our invention relates to improvements in cinder sifters, and the objectof our invention is to devise a simple and efficient machine of thisclass, which will be clean to operate and in which the separation willbe rapid and complete.

A further object is to produce an ash sifter which is cheap and easilyconstructed, and yet is not liable to wear out quickly.

l/Ve attain these objects by means of the device illustrated in theaccompanying drawings and which consists essentially of an outer woodenor other case open at the bottom and provided with a hinged lid. In thefront, is an oblong opening extending from side to side and which isclosed by a hinged flap. Extending from a point near this opening, andon the inside of the case is an inclined screen of wire or othersuitable material supported in a wooden frame, and journaled in thesides of the case, near the top is another screen which is curved in aspiral form and supported in such form by end pieces. A crank isprovided by means of which this latter screen may be rotated.

In the drawings, like characters of reference indicate the same orcorresponding parts throughout the several views.

Figure l, is a general perspective view of our invention a portion ofone side being broken away to show more clearly the manner of supportingthe inclined screen. Fig. 2, is a cross sectional view in perspectiveshowing the spiral screen. Fig. 3 is a detailed view showing the mannerof supporting the flap I and for holding the saine in closer position.

A is the outer casino of wood provided with a semi-cylindrica cover B ofsheet iron or other suitable material nailed at the edges tosemi-circular seinents C connected together by cross strips D-D.

E are hinges attached to the cross strip D and which connect the coverto the case.

The sheet metal of the cover extends below the strip D at the front ofthe case thus forming a flap which prevents the escape of dust.

F is the opening in thc front of the case which is closed by the flap G.

I-I is a strip of canvas or other material which is nailed along oneedge to the inner side of the case. The other edge is inserted betweenthe flap G and a strip of metal I which is attached to the flap by meansof rivets, which rivets also extend through the canvas I-l. The ends ofthe strip I are pressed so as to form portions J of circular sectionwhich portions extend through holes in the sides of the case so as topermit of the flap being swung. One of the said rounded portions J islonger than the other, and is bent at right angles to the body of thestrip and extends forward as indicated in Fig. 1, so as to projectbeyond the front of the case.

' K is a latch pivoted to the end of the case and extending forwardlytowards the front thereof. As shown the latch is made with a twisttherein and when the flap G is closed is pressed between the portion Jand the front of the case and the twist engaging with the said portion Jserves to hold the flap securely closed, thus preventing the escape ofdust.

L is the inclined wire screen attached to wooden side pieces M andprevented from sagging by cross rods N. The upper end of the screenrests against the back of the case, while the lower end is supported bywooden blocks, attached to the sides of the case, one of which is shownat O in Fig. 1. The screen L terminates at a distance from the front ofthe case sufficient to permit the flap G to just close the gap when itis thrown back, and it projects above the blocks O so that when the flapG is thrown back its surface comes flush with the surface of the screen.

P is the spirally curved screen and consists of two end pieces Q ofspiral outlinel around the periphery of which is nailed or otherwisefastened the screening P which is prevented from sagging by rods placedat intervals and extending between the end pieces. This screen isrotatably mounted in the case A towards the top thereof so that itclears the inclined screen by a small dis- `to theright; on account oftheir'weight, the

contents keep more or less together and in the sameplace, and the motionof the screen causes them to be agitated, separating the ashes from thecinders. The ashes pass through the spiral screen and fall onto theVinclined screen through which they pass, and

settle at the bottoni of the case. The motion of the crank handle iscontinued until the clinkers are all collected in the smaller curvedportion of the spiral screen, the separation being complete, or nearlyso. The opening F is then uncovered by raising the latch K and throwingthe flap Gr back until it rests on the blocks O, its surface being thenflush with the surface of the inclined screen. The motion of the crankis then continued, and When the opening in the spiral screen faces theground the clinkers fall out of the said screen onto the inclined screendown which they travel passing through the opening F into a suitablereceptacle placed beneath it. The fall from one screen to the other, andthe subsequent travel down the latter eifectually frees the cinders fromthe ashes.

In the drawings We have shown the case of our ash-sifter Without abottom so that the ashes fall to the ground, the ash sifter being placedat any desired spot. l/Ve may however provide a drawer at the bottom ofthe case for the reception of the ashes.

lhat We claim as our invention is:

In a device of the class described, the

4combination With the casing having an open- OLIVER BOSCO DURRANT.CHARLES EDWARD BALE.

Witnesses ROBERT GroWANs, E. 7. MONEILL.

